I saw The Dark Knight Rises over the weekend and was utterly shocked by how good it was. I don't think it even had the right to be that good. I think it's the best of the three, and the best superhero movie ever made, with Superman II close behind.
All of which is to say that Nolan isn't trying to push a crude, Ayn Rand-esque parable about heroic Gotham capitalists threatened by resentful, parasitic looters. His model, as the movie's literary references make clear, is "A Tale of Two Cities" rather than "Atlas Shrugged," which means that he's trying to simultaneously acknowledge the injustices of the existing regime while suggesting that both the revolutionary and anarchic alternatives would be much, much worse. Across the entire trilogy, what separates Bruce Wayne from his mentors in the League of Shadows isn't a belief in Gotham's goodness; it's a belief that a compromised order can still be worth defending, and that darker things than corruption and inequality will follow from putting that order to the torch. This is a conservative message, but not a triumphalist, chest-thumping, rah-rah-capitalism one: It reflects a "quiet toryism" (to borrow from John Podhoretz's review) rather than a noisy Americanism, and it owes much more to Edmund Burke than to Sean Hannity.